Table of Contents

## How do you calculate lens maker?

The Lens Maker’s Formula

- f is the focal length (half the radius of curvature)
- n is the refractive index of the material used.
- R1 is the radius of curvature of sphere 1.
- R2 is the radius of curvature of sphere 2.
- d is the thickness of the lens in consideration.
- n1 is the refractive index of the lens in consideration.

**What is the formula of lens formula?**

Let’s see how to use lens formula (1/v-1/u= 1/f) to locate images without having to draw ray diagrams.

**What is R1 and R2 in lens maker formula?**

R1 is the radius of curvature of the lens surface closest to the light source, R2 is the radius of curvature of the lens surface farthest from the light source, d is the thickness of the lens.

### WHAT IS lens maker formula prove it?

The formula (1/v) + (1/u) = (1/f) gives the focal length of a double convex lens, where u is the distance between the object and the lens and v is the distance between the image and the lens.

**WHAT IS lens maker formula for concave lens?**

The focal length, image distance, and object distance are all connected in the lens formula for concave and convex lenses. The formula 1/f = 1/v + 1/u can be used to establish this link. The focal length of the lens is f, and the distance of the generated image from the lens’ optical centre is v in this equation.

**Why is U V 2f?**

The values of u and v will be same for point A. So the coordinates of Point A must be (- 2f, 2f), because for a convex lens, when u =-2f, v=2f. Hence , half the value of either coordinate of A (i.e., distance OB) gives the focal length of the convex lens.

## WHAT IS lens and lens formula?

Lens equation or lens formula is an equation that relates the focal length, image distance, and object distance for a spherical mirror. It is given as, Lens Formula – 1/u + 1/v = 1/f. where. v = Distance of the image from the lens.

**WHAT IS lens maker formula explain its terms?**

Lens maker formula is the formula for the manufacturer of lenses. Given the specification of the lenses in terms of power (long distance and short distance), they make the lense using the proper combination of glass, with appropriate radii of curvature. 1/f = (μ-1) [1/R1 – 1/R2]

**WHAT IS lens maker formula for convex?**

Answer: 1/f = 1/v – 1/u, According to the convex lens equation. The relationship between lens’ focal length along with distance between an object in front of it as well as picture created by that object.

### What is r in lens?

“R” stands for Ring and means the lens is equipped with an aperture ring.

**Why is R1 positive and R2 negative in convex lens?**

r is negative for concave faces and positive for convex (as seen from the object). r1 is the radius of curvature of the face closest to the object and r2 is the radius of curvature of the other face. f is positive for converging lenses and negative for diverging lenses.